– Lat/Long: 48.71° N 121.99° W
South Twin Sister
Weather Forecast, United StatesIssued: 3 pm Wed 11 Feb Local TimeUpdates in: hr min sUpdate imminent
Issued: 3 pm Wed 11 Feb Local Time
Updates in:
Update imminent hr min s
Issued: 3 pm Wed 11 Feb Local Time
Updates in:
Update imminent hr min s
3 South Twin Sister Elevations: 3 Forecast Elevations: Days 1–4 Weather SummaryHeavy rain (total 22mm), heaviest during Fri afternoon. Later becoming colder with a dusting of snow on Fri afternoon. Freeze-thaw conditions (max 8°C on Wed afternoon, min 0°C on Fri night). Wind will be generally light. | Days 5–7 Weather SummaryMostly dry. Freeze-thaw conditions (max 6°C on Mon afternoon, min -4°C on Sat night). Wind will be generally light. | ||||||||||||||||
Wed 11 | Thursday 12 | Friday 13 | Saturday 14 | Sunday 15 | Monday 16 | ||||||||||||
PM | night | AM | PM | night | AM | PM | night | AM | PM | night | AM | PM | night | AM | PM | night | |
 |  |  | |  |  |  |  |  |  |  | | |  | | | | |
clear | cloudy | some clouds | some clouds | light rain | mod. rain | light snow | snow shwrs | light rain | cloudy | clear | some clouds | some clouds | some clouds | some clouds | some clouds | some clouds | |
km/h | |||||||||||||||||
 |  |  |  |  |  | ||||||||||||
— | — | — | — | — | — | 3 | 1 | — | — | — | — | — | — | — | — | — | |
— | — | — | — | 0.9 | 9 | 10 | — | 2 | — | — | — | — | — | — | — | — | |
max °C | 8 | 5 | 8 | 7 | 4 | 4 | 3 | 1 | 2 | 1 | -2 | 1 | 1 | -2 | 5 | 6 | 4 |
min °C | 5 | 4 | 6 | 5 | 4 | 3 | 2 | 0 | 1 | 1 | -4 | 0 | -2 | -3 | 4 | 3 | 3 |
5 | 4 | 6 | 5 | 2 | 3 | 2 | -2 | 0 | 1 | -4 | 0 | -2 | -5 | 2 | 1 | 1 | |
1900 | 1850 | 1550 | 1450 | 1150 | 1100 | 950 | 650 | 750 | 700 | 0 | 550 | 700 | 0 | 1400 | 1550 | 1900 | |
Cloud base (m) | 8650 | 6550 | 3050 | 2150 | 1700 | 600 | 600 | 600 | 600 | 600 | 600 | 600 | 550 | 550 | 550 | 550 | 1450 |
 | — | — | 7:20 | — | — | 7:18 | — | — | 7:16 | — | — | 7:15 | — | — | 7:13 | — | — |
 | 5:22 | — | — | 5:23 | — | — | 5:25 | — | — | 5:27 | — | — | 5:29 | — | — | 5:30 | — |
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South Twin Sister Weather (Days 0-3):
The weather forecast for South Twin Sister is: Heavy rain (total 22mm), heaviest during Fri afternoon. Later becoming colder with a dusting of snow on Fri afternoon. Freeze-thaw conditions (max 8°C on Wed afternoon, min 0°C on Fri night). Wind will be generally light.
South Twin Sister Weather (Days 3-6):
Mostly dry. Freeze-thaw conditions (max 6°C on Mon afternoon, min -4°C on Sat night). Wind will be generally light.
This table gives the weather forecast for South Twin Sister at the specific elevation of 500 m. Our advanced weather models allow us to provide distinct weather forecasts for several elevations of South Twin Sister. To see the weather forecasts for the other elevations, use the tab navigation above the table. For a wider overview of the weather, consult the Weather Map of Washington.